Customization: | Available |
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CAS No.: | 9004-32-4 |
Formula: | C6h7o2(Oh)2CH2coona |
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Chemical Name: Sodium carboxymethyl cellulose
CAS No.: 9004-32-4
Synonyms: CMC sodium salt, Carboxymethylcellulose sodium, Cellulose gum
Appearance: White to off-white fibrous or granular powder, odorless, and hygroscopic
Solubility: Highly dispersible in water (forms a transparent colloidal solution), insoluble in organic solvents like ethanol, acetone, and ether
pH Stability: Optimal viscosity at pH 7; unstable in strong acids (pH < 5) or bases (pH > 10)
Thermal Stability: Viscosity decreases at high temperatures (>80°C)
Water-Mediated Process: Cellulose is treated with NaOH to form alkali cellulose, then reacted with chloroacetic acid
Solvent Process: Uses isopropanol/ethanol as a medium for etherification
Food Industry: Thickener, stabilizer, and emulsifier in ice cream, sauces, and beverages (max. 5g/kg in instant noodles)
Pharmaceuticals: Tablet binder, disintegrant, and suspending agent in syrups
Cosmetics: Thickener in creams and lotions
Industrial Uses:
Oil drilling (mud stabilizer)
Textiles (sizing agent)
Paper manufacturing (coating additive)